Performance Analysis of Existing 600MW Coal-Fired Power Plant with Ammonia-Based CO2 Capture

This paper analyzes the techno-economic performance of 600 MW coal-fired power plant with and without ammonia-based CO₂ capture process, based on the operating data of an existing power plant. The simulation and analysis, with fully consideration of features of existing coal-fired power plants and the integration of CO₂ capture process with steam cycle, are made to reveal the thermal and environmental performances of coal-fired power plants with and without CO₂ capture. The results show that, when adopting CO₂ capture process, the plant efficiency will decrease significantly, and the cost for electricity will increase dramatically. By comparison, the performances of the ammonia-based CO₂ capture system are obviously better than that of the amine-based system, which may result from the fact that aqueous ammonia has a lower reaction heat demand for absorbent regenerating.